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Mathematics, 17.10.2019 10:20 michellelirett
The life expectancy of a typical lightbulb is normally distributed with a mean of 1,975 hours and a standard deviation of 25 hours. what is the probability that a lightbulb will last between 1,950 and 2,050 hours?
a) 0.84
b) 0.77
c) 0.82
d) 0.89
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Answers: 3
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The life expectancy of a typical lightbulb is normally distributed with a mean of 1,975 hours and a...
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